OK guys - I'm the poster. I just thought there might be a pickup points for each of Jomtien, Pattaya and Naklua as i believe they are far from each other. I was just trying to be helpful by covering all basis with information.
So i have booked a place. I will stay in Pattaya City....Near Central Pattaya Road and Pattaya 3rd road (looking at google map). It does look a bit far from the place suggested by @Thailand J but certainly doable.
I'm just a backpacker, so not looking to do a visa run. Looking for a cheap and convenient way to make my Siem Reap or maybe Battambang. Though the visa run idea isnt that bad an idea as i will need to return to Thailand a few days later anyway to fly home.
As for the traffic - i would hope to leave 6am (which is earlier than the yellow bus)